Method for selecting gear in automatic transmission unit, using comparison of actual speed and possible acceleration

摘要

A change into a higher gear is normally performed when the potential acceleration using the higher gear is at least of the same or a higher level as the level of the gear used at present. A transmission control unit uses the parameters of the speed to be maximally gained in the next higher gear for the determination of the required acceleration. The information about the intended speed is transmitted to the engine control unit, the torque and the pedal pressure checked, and the data returned to the transmission control unit in order to make a decision.